4.
    发明专利
    未知

    公开(公告)号:MX9201860A

    公开(公告)日:1993-08-01

    申请号:MX9201860

    申请日:1992-04-22

    Applicant: HOECHST AG

    Abstract: In the process for the continuous preparation of aminoaryl or aminoalkyl beta -sulphatoethyl sulphones by reaction of the corresponding beta -hydroxyethyl sulphones with sulphuric acid at a molar ratio of 1:1 to 1:1.15 at temperatures above 120 DEG C, a mixture of a beta -hydroxyethyl sulphone and sulphuric acid is fed to a fluidised bed of the end product produced by recycling and mechanical stirring. The mixture is reacted at 100 to 200 DEG C.

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